Temperature sensor, 20,000-ohm Negative Temperature Co-efficient (NTC), flush wall mount, with logo. C7772 Temperature Sensors are designed for Excel 5000 family and other Honeywell controllers. They provide resistive output signal and are well suited for low-profile, wall mounted applications when mounted on industry standard utility conduit box. Rugged, brushed stainless steel wall plate. Integral foam pad isolates wall plate sensor from conduit box. Insulated screw terminals ensure reliable field wiring connection. Models available with variety of resistive temperature sensor elements.